Unique ID of the sale transaction, (typically including terminal+receipt-number).

slsrpt_Examples
 <sale date="2022-03-21T13:31:20" id="XY1234567"> 
slsrpt_XPATH
/b24Message/salesReport/site/sale/@id
slsrpt_Required
Yes
slsrpt_Type
Text
slsrpt_Limits

None

slsrpt_Sort
1900
Id
10